Weighing-machine



Patented J une 22, 1920.

5 SHEETS-SHEET l.

T. M. FOOTE.

WEIGHING MACHINE.

APPLICATION man FEB.2|,1914. 1,344,339.

Invewow Teodo zfeMEo ie. y M M r T. IW. FOUTE.

WEIGHING MACHINE.

APPLlcATloN FILED FEB. 21. 1914.-

Pmwd June 22, 1920.

5 SHEETS-SHEET 2.

f77/venian ZVaeodoreMFoO/e ly Ml r T. M. FOUTE.

WEIGHING MACHINE.

APPLICATION FILED FEB. 2L, I9I4.

1,344,339. I Patented June 22, 1920.

5 SHEETS-SHEET 3.

mn/e658@ f Tf1/Bod orfeMFoo Le T. M. FOUTE.

WEIGHING MACHINE.

APPLICATION FILED ma, 2|, 1914.

Patented June 22, 1920.

5 SHEETS-SHEET 5.

mn/esse@ lia/vena? r/ Theodorejlboe.

y 3,/ l "7p/.5 s

operating therewith;

THEODORE M. FOOTE, 0F ALLSTON, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN-v MENTS; To BosToivy SCALE AND CORPORATION or MASSACHUSETTS.

MACHINE CO., 0F BOSTON, MASSACHUSETTS, A

WEIGHING-MACHTNE.

Specication of Letters Patent. Patented June 22, 1920,

Application led February 231, 1914. Serial No. 820,332. i

To all lwhom t may concern:

Be it known that 1, THEoDoRE M. Foo'rn,

a citizen of the United States, and resident y of Allston, Massachusetts, have invented an Improvement in Weighing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, likeI characters on the drawings representing like parts.

This inventionrelates to weighing machines or scales, and among other objects provides asimple and effective clutch mechanism -for transmittingk a continuous and a step-by-step movement `to the eam.

The character ofthe invention may be best understood by reference to the following description o f x an illustrative embodiment thereof shown in the 'accompanying drawings, wherein poise along the Figure 1' is a diagrammatic view showing A various instrumentalities comprising an illustrative weighing machine embodying the invention and electrical connections forv said instrumentalities;

Fig. 2 is aside elevation of the weighing beam, poise and various instrumentalities co- F ig. 3 is aplan view of the deyicesshown in Fig. 2; Fig. 4 on an enlarged scale is a section taken on line 4 4 of Fig. 3; c Fig. 5 is a plan View .of the devices shown in Fig. 4;/ f

Fig. 6 is an end elevation of showni1iFigs-4and5; Fig. 7 on an enlarged scale is a sectlonal detail of the clutch shown in Fi'g's..4 and 5; x Fig. 8 is a sectional detail .taken on line 8-8 of Fig. 6' and shownon an enlarged scale; and

Fig. 9 on van/enlarged scale is a section the devices taken on line 9 9 of Fig. 2 showing an indi- `catorand recorder.

bevel gear the same by a screw shaft 3 journaled in appropriate bearings on said beam.

The yscrew shaft is rotated by a motor through a clutch mechanism. The connec tions from said motor to said shaft include a bevel gear; 5 on the latter meshing .with a 4 shaft 3 and journaled in bearings in standards 11 shown herein as mounted on a plate 13 on the scale beam. Loose on this shaft are gears 15 and 17 adapted tobe driven in opposite directions from the motor. The gear 15 is driven by a gear v19\fast on a shaft 21 parallel to the shaft 9 and also journaled in said standards 11. This shaft projects beyond one of said standards and receives a large gear 23 driven by a pinion 25 fast on vthe shaft of the motor 27. By these connections the gear 15 will be driven continuously in one direction by said motor.

To drive the gear 17 in the opposite direction the shaft 21 referred to, is provided with a gear 29 meshing with a on a shaft 33 journaled in said standards and having a second gear 35 thereon meshing with the gear 17. Obviously by the interposition of the intermediate gears 31 and 35 in the drive between the gear 29 and the gear 17 the latter will be lgiven ai rotation opposite in direction to Vthat of the gear 15.

The circuit for the poise motor 27 comprises a main positive wireP from which is 47 connected in turn with the coils of said motor. These coils' are connected by a `wire as with a fixed contactwlf) adapted to be connected with a -contact 51, the latter being connected by a wire a4 with a contact 53 ,on

the projection of the beam knife fulcrum, re-

ferred to. The contact 53 is connected with va spring contact 55 connected by a wire a5 with the main negative wire N.

The motor is driven continuously at a constant rate of speed. To accomplish this it is provided'with a governor 57 mounted on an extension of the motor shaft. AAlso mounted on this shaft is a sleeve 59 telescoping therewith and terminating in a cone bearing point forengagement with the congear 31 fast tact 51 in the motor circuit, referred to.

This contact is pivotally mounted and normally urged away from the other contact 49 by a spring 51. Encircling the motor 'shaft and ,fsleeve 59 is a"spring 61 stronger than the spring 51a and tending to connect -said contacts 49 and 51. In the event that the speed of the motor becomes too high the governor balls will fly outward against the resistance of the spring operate to automatically make and breakl and variably connect the contacts 49 land 51 and maintain a constant speed of the motor.

To prevent objectionable sparking between the 'governor controlled contacts 49 and 51 a resistance wire 1- is shunted across the wires a3 and a4 of the motor circuit. This resistance is so proportioned that it will carry just enough current to the motor to barely turn the same if once it has been started. As a result the running current of.' the motor which is automatically made and broken by the governor is simply the current which is effective to maintain rotation of the motor at the speed desired after once the motor has been started. Consequently Vfeed the poise in one direction.

the amount of current which is made and brokenand the sparking tendency is reduced to a minimum.

To control the starting and stopping of the motor a switch 62 is provided in the main positive line P. This switch will be closed `to supply current to the motor and various other circuits to be described.

Electrical clutches. are provided for connecting the gears 15 and 17 tothe shaft 9. These clutches (Fig. 7 comprise electromagnetic coils 63 and 65 fast to said gears 15 and 17 respectively. Interoosed between Hwse coils is a disk clutch member 67 fast on the shaft 9. If the electro-magnetic coils 63 are energized they will gripthc disk 67 and impart rotation to the 'shaft 9 and If on the other hand, the electro-magnetic clutch 65 1s energized it will grip the dis'k member 67 and rotation will be imparted from the motor to the poise screw vshaft in an opposite direction.

The circuits for energizing [the clutch I magnet coils 63 and 65 will now be de-` scribed. The circuit for the coil 63 comprises a wirey b tapped from the wire a in the motor circuit and is connected to a magnet 69 for lcontrolling va beam lock timer tol be described. This magnet is connected by a wire b with branchwires b2 and b3.

The branch wire b2 is connected to a brush contact 71 coperating with acontact rino' 73 encircling and connected to the clutc magnet coils- 65. A second contact ring 75 is provided also vencircling and connected to the coils of the clutch magnet 65. Coperating with the ring 75 is a brush contact 77 connected by a wire ln. with a contact 79 preferably of resilient material and adapted to be flexed against its inherent resilience to engage a fixed contact 81 b a controlling device to be described. he fixed contact 81 is connected by a wire n with a contact 83 on the beam, said contact being adapted to engage with a needle contact 85 loosely supported in an arm 85a projecting from a standardv 85h. The needle contact is connected by a wire n2 with a wire 'n3 leading to the main negative wire N.

By the circuit just described if the contacts 83 and 85 engage and the contacts 79 and 81 engage, current will be supplied to the coils of the magnet 65, thereby energizing the latter and causing the same to grip the disk member 67 which is fast to the shaft 9. As a result the screw shaft will be turned in a direction to feed the poise outward. The contact rings 73 and 75 are uninterrupted and therefore current is continuously supplied to the clutch magnet 65 and a continuous feeding movement is im parted to the poise. The motor rotates at a high rate of speed and therefore the poise moves rapidly continuously outward until it passes the beam balance point. On the occurrence of this event the beam tilts downward. It is then desirable to reverse the poise and cause the same to feed back inward to the balance point. When the beam tilts down the contact 83 ,separates from the needle contact 85 and the circuit to the clutch magnet 65 is broken, thereby denergizing the latter and causing they same to release its grip on the clutch disk 67. As a result the outward feed of the poise will be arrested.

To energize the oppositely rotating clutch magnet 63 and. cause the poise to feed inward a circuit is providedl comprising the branch wire b3, referredv to, connected to a brush contact.87 coperating with a contact ring 89 encircling and connected to the clutch magnet coil 63. A similar ring 91 is connected to said coils. and has coperating therewith. a brush contact ,93 connected by a wire n* with a resilient contact 95 adapted to be moved into engagement with a fixed contact 97 by a controlling device to be described. The xed contact 97 is connected by a wirefn5 with a needle contact 99 loosely supported on the beam. On down tilt of the beam said contact 99 is adapted to engage a fixed contact 100 on an arm 101 projecting from the standard 85", referred to. The contact 101 is connected by. a wire a with the l'wire n3, referred to, leading to the main negative Wire N.

The up tilt of the beam' is limited by` ay stop 102 and the down tilt of the limited by a stop 1021.

If the beam is tilted down to connect the contacts 99 and 100 and the contacts 95 and beam is 97 are connected the circuit will be complete to the clutch magnet 63, thereby energizing the latter and causing the same to grip the clutch disk 67 and transmit the rotation of the'gear thereto. This will cause the poise to travel rapidly inward by a continuous movement.

The tilting up of the beam to the balance point is rather sluggish. Therefore, to prevent the poise from passing beyond the balance point its feed approaching said point should be by a slow step-by-step movement.

To change from avcontinuous to step-bystep movement the clutch magnets 63 and 65 instead of continuously gripping the disk 67 `are caused intermittently to grip the same.

To accomplish this the clutch magnet 65 is provided with a sectional contact ring 103 encircling the same and comprising alternating insulation and conductive portions. Cooperating with this ring is a brush contact 105 connected by a Wire n with the wire n', referred to, leading to the beam contact 83. It will be observed that'current can be taken oif of the clutch magnet 65 either through the continuous ring 77 or the alternately conducting and insulation portion ring 103. If the circuit is complete to both of said rings the continuous ring will dominate and the magnetwill continuously grip, the disk 67. If, on the other hand, the circuit to the continuous ring is broken by the-separation' of the contacts 79 and 81, the circuit will be intermittently completed to the clutch mag# net through the sectional ring 103 and said magnet will intermittently grip the nate and current will be continuously supplied to the magnet clutch 63,' thereby causing the same continuously to grip the clutch disk 67. If, however,'the circuit from the ring 91 is broken by the separationl of the contacts-95 and 97 current will be intermittently completed to the clutch magnet 63 through the sectional ring 107 and said magnet will intermittently grip the disk 67 and transmit a step feed to the poise lscrew shaft.y

It is desired to feed the poise by a continuous movement excepting when it approaches the beambalance point. The controlling device for automatically changing from 'continuous to step-bystep feeding and vice versa willl nowl be described. This device comprises disk members 111 and 113 (Figs. 1' and 7) the' former being mounted on the hub of the latter and-held thereto in different positions of adjustment by a screw 115. Projecting radially from the disk member 111 is a pin 117 and projecting radiall from the disk member 113 is a pin 119. ojfrictionally rotate the disks 111 and 113 from the clutch shaft 9, the latter is provided with a disk 121 having a hub fast to said shaft and adapted to be pressed 'against friction material 123 interposed between saiddisk 121 and said disk member 113 by a helical spring 125 on said shaft confined between a washer 127 at the end of the hub of the disk member 113 and a ring l129 faston said shaft.

By this construction the disk members 111 and 113 will be rotated frictionally from the clutch shaft 9 in one direction or the other in accordance with the direction yof rotation of said clutch shaft untilthe pin 117 engages the resilient contact 81 in the lnegative continuous'circuit for the nclutch magnet 65, or until the pin^119 engages the resilient contact 95 in the negative continuous circuit for the clutch magnet 63. As soon as lsaid pins have engaged and closed`r the contacts actuated thereby further roytati've movement thereof will be arrested and the disk plate 121 will rotate relatively to said disk members without transmitting rotation thereto.

If for example the pin 117 is engaging the resilient contact 81 causing the same to connect 'with the contact 79 the continuous feeding circuit is completed for causing the poise to be fed rapidly continuously outward. As soon as the beam tilts downward this circuit is broken and the circuit is completed to the other clutch, thereby causing the poise to startto feed inward. The pin 119, however, will be at a considerable distance from the contact 95 and will have to before it will engage said contact and cause the same to engage with Since the contact 95 is separated from the contact 97 the continuous circuit to the clutch magnet 63 is'broken, but the step-by? step circuit is completed. Therefore, the feed of the poise at this time will be by a stepy-step movement. In a normal weighing operation this step-by-step :feedv will the contact 97.l

.travel through a considerable arc of travel 83 and 85 are separated, thereby breaking n both the inward and .outward feed circuits for the poise. As a result the poise will be stationary.

As stated, the pin disk 111 maybe adjusted relatively to the pin disk 113. By-

, this arrangement the pins 117 and 119 may be `adjusted into superposed relation or may be adjusted any desired distance apart and thereby permit the desired limit to be placed on the duration of the step-by-step feed since the spacing between the pins determines the length of this" feed` In weighing, it lsom'etimes happens that the beam is vibrated more or less in an abnormal manner. As a result it is very important to provide some limit, such as de' scribed above for the step-by-step feed.

' Otherwise there would be a considerable loss of time from an unduly protracted step feed. The disk pin contact control arrangement described lends itself advantageously to this purpose. 1f for example the poise were caused to travel inward beyond the beam balance point very shortly` thereafter the disk 113 would have rotated sufliciently to cause the pin 119 to engage the contact 95 and connect the same with the contact 97,

thereby completing the continuousfeed circuit to the clutch magnet 63. As a result the poise would travel rapidly during-.the remainder of its inward travel and. would quickly reach a point where the beam would tilt upward, automatically reverse the poise and start the drive rapidly back outward to and beyond the beam balance point.

,Then the beam would tilt down again, causing the denergization of one clutch and the energi'zation of the other, thereby reversing the eed and producing a slow step travel of the poise to the balance oint.

To steady the clutch sha 9 and prevent any lost motion thereof, such for example as might be occasioned by the tendency of the resilient contact 79 to reversely rotate quency desired.` To regulate this the rela-l tive length of the insulation and conductive segments of the magnet contact rings are varied' as desired.

Having described the poise feeding motor,

the clutches and their circuits for automatically causin continuous eed lmovement followed by a step-by-step' feed movement to the balance the poise to travel with apoint, there will now be described means for locking the beam after it has reached the balance point.

To this end the beam is rovided with a lug 131 (Figs. 1 and 2) epending therefrom and having opposed notches for receivingteeth on arms 133 pivoted together adjacent their lower ends.Y These arms are drawn toward one another into the notches of said lug by the Spring 135. To release said teeth from said notches there is provided an arm 137 pivoted on a fixed standard 139 and havin rotative therewith a short arm 141 carrylng rollers 143. When said arm is rocked in one direction the rollers 143 will spread the teeth apart and release the beam lug and when rocked in an opposite direction said teeth will be released to the action of the spring 135, permitting the latter to draw said teeth into the notches of said lug. 4

. The arm 141 for the rollers 133 is oblique to the tooth arms 133 when holding them in open position. Therefore if said arm is released thev spring 135 will automatically rock said rollerk arm 144 and cause the arms 133 to grip the beam lug.

permit the spring 135 to move the arms 133 and lock the beam.

The circuit for the magnet 153 comprises a wire 0 tapped from the main positive wire P and connected to said magnet. This magnet is also connected by a wire cwith a resilient contact 155 adapted to be connected by a timer device to be described with a resilient contact 157. This contact is connected by a wire n with the wire n3 leadin to the main negative wire N.

. he beam lock should not become effective to lock the beam until after a predetermined length of time, such for example as three seconds, has passed after the poise has reached the beam balance point in order to make certain that the beam is not locked until after it reaches its final position of balance.

'When the contact 155 is connected with the contact 157 the circuit will be`=com scribed. This device comprses a pair of 'the gear 179.

disk members 159 and 161 (Figs. 1,14, 5 and 8). The `disk 161 has a long sleeve-like hub 163 loose on an end of the shaft 21 forming part of the gear train between the-motor and the clutch. The disk 159 is held in different rotative positions of adjustment on the hub 163 by a screw 165. The disk 161 has apin 167 projecting radially therefrom and adapted to engage the contact 155. The disk 159 has a pin 169 projecting radially therefrom and adapted to engage the Contact 157. Encircliug the hub 163 is a helical torsion spri disk 15,9 an the other end fast to a pin 173 projecting `from an armv 175 to be referred to.

The disks 159 and 161 are rotated as a unit and in sodo' energize the spring 171. AI speed reduction transmission from the shaft 21 to said disks is provided comprising a planetary gear mechanism including a gear 177 receiving the shaft21 and fast to one ofthe bearing standards 11, referred to. A second gear 179 is loosely vmounted on the shaft 21 and is substantially of the same size as the gear 177 but is provided with one more tooth than the latter. Interposed besltween the gears 177 and 179 fast on the shaft 21 is an arm 181 having journaled adjacent an end thereof a short shaft 183 carrying pinions 185 and 187, the former meshing with the gear 17 7 and the latter meshing with By this arrangement -a reduction from the high speed of the shaft 2f is made so that thewdisk 161 makes onlyl about two revolutions per minute.

The rotation of the gear 17 9 is transmitted frictionally at times to the pin disk 161. To this end friction disks 189 are interposed between said gear and disk. To press the disks together the hub.- 163 'is provided with a conical end 191 for engagement with a bearing seat 193 on the arm 17 5, referred to. This arm is pivotally mounted intermediate itsends and is provided with a spring 194 l tending to rock said arm and press the disks together and thereby cause the disk -161 to be rotated by the gear`179. To prevent the disk 161 from being rotated by the gear 17 9 the arm 175 is provided with an armature 195 for coperation with the magnet 69, re-

ferred to as being inthe clutch circuits for controlling the` travel of the poise.

The magnetA 69 is energized so long as the beam is in its up or down tilted positionsl completing one or the' other of the circuits to the clutches. Said magnet is denerglzed, however, when the beam isin an intermediate or balanced position breaking the cirthe beam lis in either its up or down tilted. position the magnetiwill be energized and cuits to said clutches. Therefore, so long as willy rock the arm 175 against lthe resistance of the spring 194 and thereby release the pin 171 having one end fast. to the disk 161 from the gear 17 9 and prevent rotation of said pin disk.v The movement of the disk 161 away from the gear 179 is assisted by a spring 197 contained within the yhub 163 and confined against an end of the shaft 21. When the beam reaches a position of balance the magnet is denergized, thereby permitting the spring 194 to rock the arm 17 5 in a direction to press the disk 161 toward the gear 17 9. As a result rotation is transmitted from the gear 179 to the disk ,161, causing the latter to slowly rotate until its pin 167 travels around and engages the contact 155, thereby moving the latter into iengagement with the Contact 157. This 4completes the circuit to the magnet 153,

thereby energizing said magnet and tripping the latch 147 from the beam lock arm 145 and locking the beam. As stated, the' shaft 21, on'which the planetary gearing is mounted, is driven continuously from the motor and utherefore it is rotatedv after the poise has been arrested at the balance point.

The planetary speed reduction gearing, however, causes the disk 161 to rotate at a very slow rate of speed. Consequently, a' period such for example as three seconds, may

elapse while thev pin 167 is moved through an arc of travel suicient to bring it to the contact 155 to connect the same with the contact 157 This interval insures the preventing of the locking of the beam until the latter has reached aiposition of final balance ing the disk 161from the gear 179. The

spring 171, previously energized in the rotation of the disk as described, will then become effective to rotate the disk back to its original positionlwhere it will be in readiness to start androtate around to measure olf the three `second or other interval be tween the next' balance and locking of the beam. 'Y

' The beam is unlocked on the initiation of the Lnext weighing operation. To this end there is provided a lever 199 (Fig. 1) pivoted between its ends on the standard 139 referred to, and having one end for engagement with the arm 137 and its opposite end I` l connected by a link 201 'with a handle 203 pivoted on its lower end to a bracket 205i mounted onpa plate beneath the beam. -When this handle is rocked to the left (Fig. 1) it will rock the upper end of the roller 199 to lthe right, thereby causing the same t0l en gage the arm 137 to rock the same in a contra-clockwise^ direction and spread the toothed arms 133 and release the beam.

They handle is urged in a clockwise direction by a spring 207 and is limited by a stop 209 so that after the handle hasbeen rocked to the left to unlock the beam lock it will be automatically rocked to the right to engage said stop.

' It is important that a weighing operation once initiated should be completed and a record printed of the weight before permitting the beam lock again to be' released to initiate a second weighing operation.- Toautomatically lock the handle 203 against movement to the left until after the weight has been printedv there is provided an L-shaped latch 211 pivotedon a bracket 213 mounted on the plate beneath the beam. One end of this latch coperates with a dog 215 pivoted to a face of the handle 203. Its rocking movement is limited by stops 217 and it is normally pressed toward` one of them by a leaf spring 219. The other end of the latch 211 constitutes an` armature cooperating with a magnet 221. When kthe magnet is energized the latch 211-is rocked in a contra-clockwise direction, thereby re.- leasing the dog 215 and permitting the handle to be rocked to the left to unlock the beam. When the dog 215 was released by the latch 211 the spring 219 rocked thedog away from the right to the left pin 217. When the handle 203 is rocked back to the right by the spring 207 the latch 211- is no longer effective to lock the handle since after the latch was tripped the dog 215 moved out of line with the notch in the end of said latch.

The circuit for the magnet 221 comprises a wire d tapped from the main positive wire .P and connected by a wire dlwith a fixed contact 223 adjacent the printing mechanism to be described and adapted to be connected on the operation of said mechanism with a iXed contact 225. 'This iXed contact is connected by a wire Z2 with the magnet 221, the latter being connected by a wire nl with the main negative line N.

When the contacts 223 and 225 are con-v nected in the course of producing a printed record of the weight the circuit is completed `to the magnet 221, thereby energizing the latter and rocking the latch 211, causing the same to release the handle 203. The handle remains unlocked until the commencement of the next weighing operation. Then it is rocked to the left to unlock the beam on the initiation of this weighing operation and is automatically locked again until the completion of the weighing operation.

It may happen that substantiall equal successive loads may be weighed. f a second load was of exactly the same weight as a first load obviously the beam would remain is therefore desirable to throw the beam out lof balance on the initiation of each weighing operation. To accomplish this the poise is caused to travel inward a short distance on the initiation of each weighing operation. As shown herein this is effected through' the instrumentality of the starting handle 203 which is employed to temporarily close a switch to complete a circuit to the clutch for feeding the poise inward. To this end a wire f is tapped from the wire a5 in the circuit to the clutch for feeding the poise inward, said wire being connected to a segmental contact 226 in a disk 226a of insulation material fast on the shaft of the handle 203. Coperating with this disk is\a resilient contact 226b connected by a wire f with the wire fn. in the clutch circuit for feeding the 'poise inward. By this arrangement when the handle 203 is rocked to the left to unlock the beam lock the segmental contact 226 will come into engagement with the contact 226), thereb completing the circuit to the clutch for ceding the poise inward and causing the poise to be so fed. Since the handle 203 is merely momentarily rocked tothe left and is promptly returned by itsl spring 207 to its position shown in Fig. 1, the f, f circuit is quickly broken by the disengagement ofthe contact 226 with the contact 2261. As a result the poise is fed inward only a short distance. When the beam lock is released the beam tilts upward and completes the out clutch circuit, causing the poise to be fed outward.

As stated, the weight is recorded and automatically indicated. To this end the screw shaft is provided with an extension 227 (Figs. 1, 2 and 3) cari-ying a set of wheels 229 (Fig. 9) provided with type numerals. To take a record -fromthese wheels there is provided above the same a series of platen hammers 231 mounted on resilient arms 233 secured to a shaft 234 journaled in a frame 235 supported on the beam. A ribbon of paper is fed from a let-off roll 237 around a guide roll 239 between said printing wheels and platens, and thence around another guide roll 241 to a take-upv roll 243. An ink ribbon 245 is fed from a let-off roll 247 past a guide roll 249 between said platen hammers and print wheel and thence around a uide roll 251 to a take-up roll 253.

- o actuate the platen hammers and make andv print a record from the wheels on said -paper ribbon there is provided a handle clockwise direction (Fig.\ 9) the nger`259 y is thrust upwardly and rocks the shaft 234:, thereby lifting the platen hammers away from the print wheels. Continued upward movement of the finger 259 causes an in- .clined portion 259a thereof to wipe past the uide roller 263 and throw the endof the nger out from the tooth inthe Wheel 261, thereby releasing the -hammers which will fall by gravityand make an impress of the weight registration on the paper ribbon.

The rocking movement of the handle lever 255 is also utilized to feed fresh Aportions of the paper and ink ribbons to the printing Wheels. lToaccomplish this a link 265 is .connected at one end to the handle lever 255 and at itsopposite end to a short arm 267 provided with a pawl 269 for engagement with a ratchet wheel 271 rotative with the paper ribbon take-up roll 243. By this construction each time thehandle lever is rocked the link 265 will rock the short arm 267 and through the pawl 269 advance the ratchet wheel and V243 a step.

end the link 265 is provided with a cam projection 273 for engagement with an arm 275 fulcrumed on the shaft of the .ink ribbon take-up roll 253. Pivoted on this arm is a pawl 277 for engagement with a ratchet 279 rotative with said take-up roll. Each time the link 265 is moved upwardly the cam 273 willcause the arm 275 to rockin a contra-clockwise direction (Fig. 9) and. through the pawl 277 will advance the ratchet 279 and take-up roll 253 an increment.

As stated, the operation of the handle in printing lis utilized to complete the-`circuit to the magnet for tripping the latch beaml lock release handle 203. To this end thereis mountedL on the handle lever 255 the contact 225 referred to, 1 and 9) whlch is lifted up into engagement with the 0011-. tact 223 each time the handle lever is rocked for printing. y

The handle lever 025.5 is locked .until after the poise reaches the balance point andthe beam has been locked. To accomplish this there is provided a latch 293 (Fig. 9) noi'- mally held by a spring 295'in engagement with an end of the handle lever 255. The latch 293 has anarmature 297 adapted to attracted by a magnet 299. To energize this magnet a circuit is provided comprising 1) a wire e tapped from the Wire d leading from the main positive wire P, said ywire e being connected to a' fixed contact 301 adjacent the latch f or the beam lock. This lixed contact 301 is adapted to be connected to a 'fixed contact303 by a bridge paper ribbon take-up roll y ,actuate the beam lock e with the magnet 299, the latter being cone nected by a wire nu wire N. y

`When the magnet 153 is energized to trip the latch 147 and lock the beam the bridge contact 305 carried by said latch is rocked to connect the fixed contacts 301 and 303, therebycompleting` the circuit to the magnet 299, energizing said magnet and causing the same to-trip the latch 293 from the handle lever 255. Thisv will permit said lever to be rocked to effect a printing of the weight.

To register and permit the ready visualization of the weight there is provided an indicator 307 composed of a .series of usual numeral wheels with provision for automatically transferring .from a wheel of lower denomination to a wheel of higher denomiwith the main negative nation. As shown hereinlthe indicator is' Amounted on the beam and is driven from a gear 309 interposed bethe recorder by tween them. e v.

yThe operation of the machine may be vbriefly described as follows:` y

placed on the platform First a load is ofthe scale. Then the switch 62` in the main positive line isclosed to supply current to the various `circuits of the machine. This immediately starts thef'j'motor to rotate but since neither the in nor the out feeding clutches are energized the motor is ineffective to feed thepoise. Then the handle 203 is rocked`to the left (Fig. 1), thereby completing the circuit to the in poise `clutch, causing the poise to feed a short distance inward. This movement of the handle operatesthroughk the rod 201and lever199 to arm 137, thereby spreading the toothed arms 133 and unlocking the beam. The beam then tilts upward, -completing the circuit to the out clutleh, 'causing the poise to feed outward wit beyond the beam balance point. On the occurrence of this event the beam tilts downward, thereby completing the circuit to the in clutch, causingthe poise to be fed stepby-step a short distance back to the beam balance point. 0n the arrival of the poise at thls point theV beamtilts upward to an intermediate position in which the circuits to both clutches are broken. The beam remalns in this position for a short interval to make-certain that ithas arrivedl at a position offinal balance. After the poise has been arrested .the magnet 69 is denergized and the spring 194 becomes effective to press the disk 161 toward the gear 17 9, causing said disk to-rotate slowly around and eventa rapid continuous travel until it passes ually complete the circuit to the`beam1lock I l in locking the beam moves thebridge contact 305 into position to complete the e, e circuit to the magnet 299 controlling the latch for the printing lever. `This energizes said magnet, trips said latch and permits said lever to be operated to print a record o f the weight. Inthe course of the rocking of said lever for this purpose the contacts 223 and 225 are connected, completing the d, d', Z2 circuit to the magnet at the handle 203. This energizes said magnet, trips the latch 211 and unlocks the handle.. This marks the completion of a cycle of'weighing operations and the handle is then free to be rocked to initiate the next cycle of Weighing operations.

By my invention is provided an efectiye mechanism for accurately, automatically and rapidly completing a cycle ofweighing operations. But a single motor is necessary for feeding the poise. The starting, stopping, reversing of the poise. and the feeding of the same continuously and step-bystep is performed by a simple and effective means extending from said electro-magnets to said poise and means for renderingI one or another of said magnets effective 'to transmit the feed from said motor to said poise. 2. A Weighing machine comprising in combination, a beam; a poise thereon; a motor:l means including a shaft for transmitting movement to the poise; magnets loose on said shaft and driven in opposite directions by said motor; means throughwhich said motor drives said magnets; means for causing one or the other of said magnets to rotate with said shaft to transmit the feed to said poise,'and a source of electrical en ergy from which said motor is operated.

3. A Weighing machine comprising in combination, a beam; a poise; a motor;

members oppositely driven by' said motor; means through which said motor drives said members; and 'means for transmitting motion from said members to said poise including electromagnets rotative With said members and circuits for said electro-magl nets controlled by movement of the'beam..

4. A weighing machine comprising in f combination, a beam; a poise; a motor;

members oppositel driven by said motor; means through w ich said motor drives said members; means to transmit motion i from said members'to said poise including electro-magnets rotative with said members,

circuits for said. electro-magnets and means` for automatically breaking saidcircuits to arrest the, poiseon its arrival at the lbeam balance point.

' 5.-A Weighing machine comprising in combination, a beam; a poise;'a motor; and means for transmitting \motion from said motor to said poise including clutch means and means for operating said clutch means to impart a continuous or a step-by-step feed to the poise.

` 6. A Weighing machine comprising in combination, a beam; a poise; and means for feeding said poise along said beam in- Icluding clutch means and clutch controlling means for automatically effecting a continuous feeding movement of said poise along said beam in. one direction and a step-by step feed of said poise along said beam in cluding clutch means and clutch controlling means for automatically effecting a continuous feed movement of said poise and a final short step-bystep .feed of said poise.

9. A Weighing machine comprising in combination, a beam; a poise; and means for feeding said poise along said beam including electro-magnetic clutch means, and means controlled by the beam for automaticall continuously energizing the saine to fee said poise by a continuous feed movementy and for automatically and intermittently energizing the same to feed said poise with a step-by-step feed movement.

10. A Weighing machinev comprising in combination, a beam; a poise; and means controlled by said beam for feedin lsaid poise along said beam including e ectromagnetic clutch means, and Vcircuits and controlling means coperating therewith for automatically energizing'thesame continuouslyy or intermittently to impart a continu# ous or step-by-stepfeed to the poise.

1l. A Weighing machinecomprising in combination, a beam; ak poise; and means controlledby said beam forl feeding said poise along said beam includin `electromagnetic c utches for feeding sai oise respectively in opposite directions, an circuits.

izo

for feeding sa-id poise along said beam in.

cluding an electro-magnetic clutch having two continuous contact rings thereon and a sectional insulation and conductive ring thereon, brushes coperating with said rings, and circuits therefor having provision for completing the circuit, through said continuous rings orthrough one of said continuous rings and said sectional ring to 'continuously or` intermittently energize the magnet and impart a continuousor step-by-step feed to the poise.

14. A weighing machine comprising` in combination, a beam ;`a poise; and means for feeding said poise along said beam including clutch means and' automatic controlling means for the latter for-automatically rendering the samev continuously' or intermittently effective to imparta continuoussor a step-by-step feed to said poise.

15. A weighing y machine comprising in combination, a beam; a poise; and means for feeding said poise along said beam^ including clutch means and automatic-controlling means for the latter for continuously or intermittently energizing the same to impart a continuous or a step-by-stepfeed to the poise, and means for automatically limiting the extent of the step-by-step feed.

16. A weighing machine comprising in combination, a beam; a poise; and means for feeding saidpoise along said beam including electro-magnetic clutch. means and automatic controlling means for the latter for continuously or intermittently energizing the same to impart a continuous or .a

for automatically limiting'the extent ofthe step-by-step feed.

17. A Weighing lmachine comprising in combination, a beam; a poise; means for step-by-step feed to the poise, and means vby said driving means cluding a motor and electro-magnetick clutch vmeans driven by said motor, electric circuits for said clutch means, switch means cooperating with said circuits for rendering the clutch effective continuously or intermittently to energize said clutch means' to impart a continuous or a step-by-step feed to the poise, and controlling means actuated by said motor for automatically operating said switch means to arrest the step-by-step energization ofl said clutch means.

19. A weighing machine `comprising in combination, a lbeam;.a poise thereon; and means for feeding said poise along said beam including clutch means having provision for rendering the same continuously or intermittently effective for transmitting movements to the poise, and means for auh tomaticallyshifting from the step-by-step movement to the continuous movement on the completion of a predetermined extent of step-by-step feed movement.

20. A Weighing machine comprising in combination, a beam; a poise; a motor; transmission means from said motor to said polse including a shaft, an electro-magnetic transmission means from said motor to said poise yincluding clutch means having provision for actuating the same to impart a continuous or a step-by-step feed movement tothe poise, and means for variably limiting the extent of the step-by-step feed.

22.y A Weighing machine comprising in combination, a beam; a poise; and means for feeding said poise along saidv beam including a motor, means coperating therewith for imparting a continuous or a stepby-step feed to said poise, and means cooperating therewith for variably limiting the extent of the step-bystep feed. i 23. A 'Weighing machine comprising in combination, driving means for imparting a continuous and a step-'bylstep feed to said poise along the beam; a circuit for said driving means; a switch 'in said circuit; and means actuated for -automatically operating said switch to shift` from a continuous to a step-by-step feed after the poise has been fed a continuous feed of predetercombination, a beam; a

means for feedingsaidA poise along said a beam; a poise; electrical iso .said poise on its arrival at the balance point;

and means for locking said beam comprising opposed teeth for engagement with notches on said beam, a spring tending to cause said teeth to engage said notches, and cam means for separating said teeth to release the beam. f y l 26. A weighing machine comprising in combination, a beam; a poise; means for feeding said poise along said beam having provision for automatically arresting said poise on its arrival at the beam balance point; and means for locking said beam including means having teeth to grip the t beam, a rocking arm having means for engaging said teeth to cause the same to release the beam, latch means for holding said arm in position to open the teeth, and means for tripping said latch to permit said spring to lock said teeth tothe beam.

27QA weighing machine comprising in combination, a beauf; a poise; means for feeding said poise along said beam; means for automatically arresting said poise on its arrival at the beam balance point; and means for lockingsaid beam including arms having teeth for gripping the beam, spring means tending `to draw said arms toward one another, a rocking arm having cam i lmeans for releasing said teeth, latch means for holding said arm in releasing position, and a -magnet for tripping said latch to permit said spring to cause said teeth to grip the beam.

28. A weighing machine comprising in combination, a beam; a poise; meansto feed f said poise along said beam; means for lockin said-beam after the .poise reaches the ba ance point; and timer means actuated by said feeding means for rendering said locking means effective on the expiration of a predetermined time limit interval after the poise reaches the beam balance point.

29. A weighing machine comprising in combination, a beam; a poise; means includ ing a motor forvfeeding said poise along said beam; a 'lock for the beam; and timer means driven by said motor and having prol vision for rendering said lock effective to lock the beam on the expiration of a prede-y termined time limit interval after the poise reaches the beam balance point.

30. A weighing machine comprising in combination, a beam; a poise; means includ ing a motor for feeding said poise along said beam; a lock for the beam; electrical means for controlling said lock including a circuit having a switch therein and means driven by said motor for closing said switch to complete said circuit and release said lock after a predetermined time limit interval has elapsed after the poise reaches the beam balance point.

3l. A weighing machine comprising in combination, a beam; a poise; means including a motor for feeding said poise along said beam; a lock for the beam; and means for controlling said lock including an electromagnet, a circuit therefor, a switch in said circuit, a wheel having an element projecting therefrom for closing said switch, and means for rotating said wheel from said motor a predetermined extent prior to. the bringing of said element in position to close said switch to complete said circuit to said magnet and lock the-lock.

82. A weighing machine comprising in combination, a beam; a poise; means including a motor for feeding said poise along said beam; a beam loclr; and electrical means coperating with said beam for controlling the saine including a circuit, a switch in said circuit, a 'switch operating member rotateda predetermined extent by saidmotor before closing said switch, means through which said motoi` operates said member and means energized by suchV rotation for returning said member to an original position.

3.3. A weighing machine comprising in l combination, a beam; a poise; means including a motor for feeding said poise along said beam.; a lock for the beam; and means 1 coperating with said beam for controllingy said lock including an electric circuit, 4a.,

switch in said circuit, and means friction ally driven from said motor for closing said switch on the expiration of apredetermined iio time interval after the poise reaches the beamV balance point.

3,4. A weighing machine comprising 'in combination, a beam; a poise; means including a motor for feeding said poise'along said beam; a loclffor said beam; `and means coperating withsaid beam for controlling said loclr including an electric circuit, a

Vswitch in'said circuit, and means driven by said mot'or for closing said switch on the expiration of a `predetermined time limit in- 'terval and having provision for varying the interval. I

l35A weighing machine comprising in combination', a beam; a poise; an indicator for registering movements of said poise; a recorder for printing the vregistration of said indicator; and means for driving said poise, indicator and recorder including a nections through which said clutches are driven by said motor, having provision controlled by movements of said beam for automatically changing the direction of movement of said poise, indicator and recorder.

36. A Weighing machine comprising in combination, a beam; a poise; means for feeding said poise along said beam; a lock for the beam; means including a handle for opening said lock to release the beam; means for locking said handle during a weighing operation; means including a handle for making a record of the weight; and

means for releasing said handle including a magnet, a circuit, and a switch in said circuit closed in the course of the operation of said recording handle.

37. A Weighing machine comprising in combination, a beam; a poise; means for feeding said poise along said beam automatically to the beam balance point; a lock for the beam; means including a handle for unlocking said lock to release the beam; means including a recording handle for producing a record of the weight; `means for locking said beam lock controlling handle during the .weighing operation; and means for releasing said beam lock controlling handle including a magnet, an electric circuit, and aswitch adapted to be closed on the movement of said recording handle.

38. In a Weighing machine, the combination of a beam; a'" poise; and means controlled by the position of the beam for automatical-ly feedlng said poise continuously in one direction and step-by-step in an opposite direction, said meansincludingl an electric circuit.

39. In a Weighing machine, the combination of'a beam; a poise; a lshaft connected to said poise; and means controlled by said beam for automatically rotating said shaft continuously in one direction and step-bystep in an'opposite direction, said means including an electric circuit.

40. In a weighing machine, the combination of a beam; a poise; poise shifting means for transmitting either a continuous or a step-by-step feeding movement' to said poise; and means controlled by said beam for automatically changing from said continuous movement to said step-by-step movement.

41. In a. weighing machine, the combination of a beam; a polse; poise shifting means for automatically imparting aninitial infeeding movement to said poise, then a continuous out-feeding movement to said poise,`

and ya 'step-by-step -nal inward feeding movement of said poise and means through which said poise 'shifting means is controlled'by said beam; l

42. In a weighing machine, the combina-I tion of a beam; a p olse; and means con-f Y beam lock; an

trolled by said beam for transmitting/a continuous feeding movement to said poise and `having provision for automatically reducingithe speed of said poiseand imparting a step-by-ste'p feed thereto as it approaches the balance point.

43. In a weighing machine, the combina*- tion of a beam; a poise;driving means for said poise including a clutch and having provision for imparting a continuous feed- 1ng -movement to said poise automatically followed by a step-by-Step feed at a lower speed, said driving means being controlled by said beam.

44. In a weighing machine, the combination of a beam; a poise; a motor; means through which said motor acts to impart a continuous feeding movement to said poise; f

and having provision for automatically feeding lsaid poise with a step-by-step movement; and means controlled by said beam for changing automatically said poise feed from said step-by-step movement to said. continuous movement in case the step-byv step feed exceeds a predetermined extent.

47. In a weighing machine', the 'combinationV of a beam; a poise thereon; motor` meansfor imparting continuous and stepby-step feed movements tov said the beam; vshifting from said continuous to said step feed including an electrical circuit and contact means actuated by said beam; a beam lock; and-motor means for Vrendering the same effective to lock the beam after the completion of a weighing operation.

48. In a weighing machine, the combination of a beam; a poise; motormeans for feeding said poisealong said beam by con. tinuous and step-by-step movements; a

actuating motor for the latter; and a-timer for deferring the rendering of said actuating motor effective to cause said beam lock to lock thebeam after the completion of a weighing operation.

49. In a weighing machine the combination of a beam;,a poise; an indicator for poise alongy and means `for automatically' registering movements of said poise; meansr including a motor for 'imparting continuous cator; andv `means including electrical circuits controlled by movement of said beam for automatically reversing said poise and indicator.

50. ln a weighing machine the combination of a beam; a poise; an indicator for registering movements of said poise; a recorder for producing a record corresponding to the indicator registration; a motor for imparting continuous feeding movements to said poise, indicator and recorder; and means coperating with said motor for imparting step-by-step movements to said poise, indicator and recorder;

5l. ln a weighing machine, in combination, a beam, a poise thereon, means comprising motor driven electro-magnetic clutch elements adapted to causemovement of the poise relatively to the beam, means for varying the direction of said movement accord-4 ingly as the poise varies in position relatively to the balance point, and means adapted to varyK the character of poise movement from continuous to step-by-step when the poise is moved into position near the balance point. f

52. ln a weighing machine, in combination, a beam, a poise thereon, means comprising motor driven electro-magnetic clutch elements adapted to cause movement of the poise relatively to the beam, means for varying the direction of said movement accordingly as the poise varies in position relatively to the balance point, means adapted to vary the character oi poise ,movement from continuous to step-by-step, when the poise is moved into position near the balance point and a locking device adapted to secure said beam in a position of balance.

53. In a weighing machine, in combination, a beam, a poise thereon, means comprising motor driven electro-magnetic clutch yelements adapted to cause movement of the poise relatively to the" beam, means coperating with the beam to vary the direction of said movement accordingly as the poise varies in position relatively `to the balance jpoint, a locking device adapted to secure said beam in a position of balance, and a `timer adapted to insure a substantial interval between the striking of a position of balance by said beam and the locking thereof.

54. In a weighing machine, `inpcombina- Y tion, a beam, a poise thereon, a motor for moving the poise relatively. to the-beam, power transmission devices including `electro-magnetically operated clutches for moving the poise in opposite directions relatively to said beam, electric circuits, and

means coperating with the beam for automatically and intermittently making and breaking one of said circuits to cause stepby-step movement of the poise.

.55. InF a weighing machine, in combination, a beam, a poise thereon, a motor for moving the poise relatively to the beam,

power transmission devices including electro-magnetically operated clutches for moving the poise in opposite Adirections relatively to said beam, electric circuitsfor said clutches, means adapted to intermittently make and break one of said circuits to cause step-by-step movement of the poise, and means dependent upon the movement of said beam controlling the operation or" said last means whereby the character of the poise movement is varied automatically from continuous to step-by-step.

56. ln a weighing machine, in combination, a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the motor to move the poise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous to step-by-stcp, and controlling means for said transmitting means and said character varying means yautomatically governed bv movement of the poise relatively to the balance point.

57. ln a weighing machine, in combination, a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the motor to move the poise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous to step-by-step, controlling means for said transmitting means and said character varying means automatically governed by movement ofl the poise relatively to the balance point, and means adapted to lock the beam in a position of balance.

58. ln a weighing-machine, in combination, a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the motor to move the poise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous to step-by-step, controlling means for saidv transmitting means and said character varying means automatically governed by movement of the poise relatively to the balance point, and means coperatively associated with said poise adapted to indicate the' weight in units.

59. In' a weighing machine, in combination, a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the. motor to move the poise in opposite directions relatively to said ybeam, meansfor varying the character of poise movement rom'continuous to step-by-step, controlling means for said transmitting means and said character Varying means automatically governed by movement of the poise relatively to the balance point, and recording means coperatively associated with said poise.

60. ln a weighing machine, in combination, a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power character varying means automatically governed by movement of the poise relatively to the balance point, and means cooperating with said power transmitting means for initially unbalancing the beam.

61. In a weighing machine, in combination, a beam, a poise movable relatively to l said beam, motor means, means between the motor and the poise for transmitting power from the motor to move thepoise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous to step-by-step, controlling. means for said transmitting means and said character varying means automatically governed by movement of the poise relatively to the balance point, means adapted to lock the beam in a position of balance, and means coperating with said power transmitting fmeans for initially unbalancing the-beam.

62. In a weighing machine, in combination,l a beam, a poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the motor to move thepoise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous to step-by-step, controlling means for said transmitting means and said character varying means automatically governed by movement of the poise relatively to the balance point, means coperatively associated with said poise adapted to indicate the weight in units, and recording means cooperatively associated with said poise.

'63. In a weighing machine, in combination, a beama poise movable relatively to said beam, motor means, means between the motor and the poise for transmitting power from the motor to move the poise in opposite directions relatively to said beam, means for varying the character of poise movement from continuous, to step-by-step, controlling means for said transmitting means and said character varying means automatically governed'by movement of the poise relatively to the balance point, means coperatively associated withl said poise adapted to indicate the weight in units. recording means coperatively associated with said poise, and means coperating with said power transmitting means for initially unbalancing the beam. Y

64. A weighing machine comprising in combination a beam; a poise; means for feeding said poise along said beam including clutch devices and means controlled bysaid .beam automatically'to coperate with the first said means to impart to said poise a continuous feedy followed by a step-by-step feed, said last means-including an electric circuit.

G5. In a weighing machine, the combinatioILof a beam; a poise; and means for feeding said poise continuously in one direction and step-by-step in an opposite direction.

66. In a weighing machine, the combination of a beam; a poise, a shaft therefor; and means for rotating said shaft continuously in one direction and step-by-step in an opposite direction.

6T.. In a weighing machine, the combination of a beam; a poise; a driving motor therefor having a torque tending to rotate the same continuously; and means coperating with said motor to produce a step-bystep feed therefrom.

68. In a weighing machinefthe combination of a beam; a poise; a driving motor therefor having provision for transmitting a continuous feeding movement to said polse; and means for changing from said continuous movement to a step-by-step movement. l 69. In a weighing machine, the combina- ,tion of ab'eam; 'a poise; and means for feedlng `sald poise along said beam including a motor and connections for imparting an in. 1t1al in-feedlng movement of said poise and a continuous out-feeding movement of said poise, and a step-by-stepfinal inward feedi ing movement of said poise.

70. In a weighing machine, the combinatlon of a beam; a poise; and driving means therefor having provision for imparting a continuous feeding movement thereto followed by a step-by-step feed at a. lower speed.

71.v In a weighing machine, the combination of a beam; a poise; a motor for imparting a continuous feeding movement to said poise; and means controlled by said beam for changing said ycontinuous movement to a .step-by-step movement.

72. In a weighing machine, the. combination of a beam; a poise, driving means;

`'means for transmitting the drive from the latter to said poise; and means including electric circuits controlled by said beam for changing the feed from a continuous to qa step-by-step movement.

73. In a weighing machine, the combination of a beam; a poise; motor means for feeding said poise along said beam with a continuous feeding movement and step-bystep movement; and means for controlling said motor means automatically causing the same to feed said poise initially inward and outward with a continuous movement and back inward with a step-by-step movement.

74. In a weighing machine, the-combination of a beam; a. poise thereon; motor means to feed said poise along said beam with a step-by-step movement; and means for preventing a step feed of saidpoise in excess of a predetermined length of travel.

75. In a weighing machine, the combination of a beam; a poise thereon; motor means for feeding said poise along said beam with a continuous feeding movement and having ,provision for feedlng said poise with a step-by-step movement; and -means for` changing from said step-by-step movement toV said continuous movement in case the step-by-step feed exceeds af predetermined extent. 7 6. In a Weighing machine, the combination of a beam; a poise; an indicator for registering movements of said poise; and motor means for giving said poise and indicator continuous feeding movements followed by step-bystep feeding movements.

77. In a Weighing machine, the combination of a beam; a poise; an indicator for registering movements of said poise; a recorder for producing a record corresponding to the indicator registration; a motor for imparting continuous feeding Inovements to said poise, indicator and recorder; and means cooperating with said motor for imparting step-by-step movements to said poise, indicator and recorder.

7 8. In a Weighing machine; the combination of a beam; a poise thereon, motor means for feeding said poise With continuous and step-by-step movements; and means for initiating a Weighing operation including a handle and beam controlled circuits for preventing step-by-step feeding movements on the initiation of a Weighing operation.

79. In a weighing machine the combination ofa beam; a poise; a motor for imparting a continuous feeding movement to said poise; transmission means from said motor to said poise including a clutch; means for operating said clutch to connect said motor with said poise on the initiation of a Weighing operation; and means for automatically locking said beam after the arrival of said poise at the beam balance point.

80. In a Weighing machine the combination of a beam; a poise; a motor for imparting a continuous feeding movement to said poise; means for transmitting movement from said motor to said poise; a beam lock and means for automatically rendering the same effective to lock said beam on the elapse of a predetermined time limit after the poise reaches the balance point.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

THEODORE M. FOOTE. Witnesses:

HENRY T. WILLIAMS, ROBERT H. KAMMLER. 

